No code 380 Medium
Boiler Fault Code No code 380
Also written as NOCODE380 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code No code 380 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is confused because the water coming into it is currently registering as hotter than the water it is trying to heat up to send to your taps. (As reported on Worcester Bosch Greenstar 12i System)
Pick your boiler brand for the No code 380 fix
Source
Information for the No code 380 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026